Helical visual display device
作者： John G. Thompson
DOI:
关键词:
摘要: A visual display device having two helices each wound from a single tubular-like material about common axis and one of the being within peripheral confines other coils helix in same direction as helix, so that when whole is rotated appear to perpetually move simultaneously opposite directions, thus offering viewer rotating an aesthetically interesting sight.
lens.org 参考文章(8)
William S Fleischer, Ball and helical tubing game apparatus ,(1969)
Gordon P. Swartz, Rotating display with black light illumination ,(1975)
Francis Rebajes, Mobile geometrical form ,(1973)
Randall S. Rochte, Segmented geometric structure ,(1985)
Horst M Schweighofer, Flight director display ,(1962)
Takashi Kaga, Magnetic amusement device ,(1982)
Albert H Munsell, Color-sphere and mount. ,(1899)
Arthur R. Downs, Educational and amusement device ,(1985)